1. What is the need for a PCB?
• The designs on breadboards or drilling boards are cumbersome, to have the orderly placement of components without jumpers or cables to be designed a PCB. It also helps in providing physical stability and the overall circuit is more reliable.
2. What software or EDA tools are you familiar with?
3. What happens if the symbols and the schematic prints are not available in the component library?
• Create them!
4. How do you check schematic symbols or fingerprints?
• Cross-check with data sheets, print tracks and match to actual devices prior to production.
5. What are the basic controls while design based MCU
• Feed path: Make sure that the feed flow paths have a sufficient trace width.
• Oscillator circuit: Make sure the oscillator is positioned near the pins on the MCU. The distance depends on the specific MCU. It is made so that MCU receives stable oscillations without noise.
6. What are the basic controls for RF design?
7. What are units to measure the fingerprints?
• Millimeter: SMD components
• Mils: Through hole
8. What is a thousand?
• 1 thousand is 1/1000 inches.
9. Why is it used?
The dimensions of most of the components of the through hole are in thousandths of an inch. For example, step between IC pins (100 thousandths of an inch), width of ICs (300 thousand, 600 thousand), etc. Therefore, if the measurement of these in mm does not round the figures.